beyond (one's) depth

(redirected from beyond their depths)

beyond (one's) depth

1. In water that is too deep for one to swim in. The lifeguard had to save the girl who had gotten beyond her depth in the pool.
2. Advanced beyond one's ability to understand or make sense of the subject matter or task at hand. The stuff they're teaching in this advanced math class is beyond my depth.
See also: beyond, depth